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Duct System and Filters
Duct System
of the supply plenum.
extend at least 3 ft. from the air handler before turning or
Filters
Model
-018, -024, -030
-036, -042, -048, -060
Table 2. Unit Air Filter Size Chart
IMPORTANT
Installing Duct System
507787G02 / 31-5000675-1
Filter Size – in.
Issue 2336
Field-Fabricated Return Air Duct Flange for
Horizontal Applications
Cabinet and Duct Flange
CABINET
DOOR FLANGE
1−1/2
(38)
DUCT
FLANGE
3/4
(19)
3/4
(19)
1−1/2(38)
BRAKE DOWN 90 DEGREES
1/2
(13)
UNIT SIZE
-018, -024,
-030
-036, -042,
-048, -060
Figure 9. Cabinet and Duct Flange
Brazing Refrigerant Lines
IMPORTANT
Handle the refrigerant lines gently during the installation
3/4
(19)
BOTTOM OF
CABINET
DUCT
ADAPTER
3/4
(19)
"A"
1−1/2
1/4 (6) DIA.
(38)
2−HOLES
"A"
18-3/8"
21-1/2"
Page 9 of 22
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